Cited by 118Metabolism, Diabetes, and CancerMuscle metabolism and nutritionCardiovascular and exercise physiology

Prior exercise increases phosphorylation of Akt substrate of 160 kDa (AS160) in rat skeletal muscle

Arias, Edward B., Kim, Junghoon, Funai, Katsuhiko, Cartee, Gregory D.·2007·American Journal of Physiology-Endocrinology and Metabolism

Abstract

The main purpose of this study was to determine whether the increased glucose transport (GT) found immediately postexercise (IPEX) or 4 h postexercise (4hPEX) is accompanied by increased phosphorylation of Akt substrate of 160 kDa (AS160, a protein regulator of GLUT4 translocation). Paired epitrochlearis muscles were dissected from rats (sedentary or IPEX, 2-h swim) and used to measure protein phosphorylation and insulin-independent GT. IPEX values exceeded sedentary values for GT and phosphorylations of AS160, AMP-activated protein kinase (pAMPK) and acetyl-CoA carboxylase (pACC) but not for AS160 abundance or phosphorylation of Akt serine (pSerAkt), Akt threonine (pThrAkt), or glycogen synthase kinase-3 (pGSK3). AS160 phosphorylation was significantly correlated with GT ( R = 0.801, P < 0.01) and pAMPK ( R = 0.655, P < 0.05). Muscles from other rats were studied 4hPEX along with sedentary controls. One muscle per rat was incubated without insulin, and the contralateral muscle was incubated with insulin. 4hPEX values exceeded sedentary values for insulin-stimulated GT. The elevated pAMPK and pACC found IPEX had reversed by 4hPEX. Insulin caused a significant increase in pSerAkt, pThrAkt, pGSK3, and AS160 phosphorylation with or without exercise. Exercise significantly increased AS160 phosphorylation, regardless of insulin, with unchanged AS160 abundance. Among the signaling proteins studied, insulin-stimulated GT was significantly correlated only with insulin-stimulated pThrAkt ( R = 0.720, P < 0.0005). The results are consistent with a role for increased AS160 phosphorylation in the increased insulin-independent GT IPEX, and the exercise effects on AS160 phosphorylation and/or pThrAkt at 4hPEX are potentially relevant to the increased insulin-stimulated glucose transport at this time.

Integrity signals

Registry

Crossref · 10.1152/ajpendo.00602.2006

Cites

49 of 49 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • TBC1D4 PAS phosphorylation was elevated in rat skeletal muscle following an acute bout of exercise, an effect that persisted for 3 to 4 hours postexercise.

    “Arias et al. [122], was one of the first to show that TBC1D4 PAS phosphorylation was elevated in rat skeletal muscle following an acute bout of exercise, an effect that persisted for 3 to 4 hours postexercise.”

    From AMPK and Exercise: Glucose Uptake and Insulin Sensitivity (2013) · cites this paper as [122]

Cites

Flagged first, then by citations

1 of the 50 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Arias, E. B., Kim, J., Funai, K., & Cartee, G. D.
Affiliations
University of Michigan (US)
Venue
American Journal of Physiology-Endocrinology and Metabolism
Published
2007-04
Volume
292
Issue
4
Pages
E1191-E1200
ISSN
  • 0193-1849 (ISSN-L)
  • 1522-1555
OpenAlex
W2145108000
Cited by
118
References
50
Citations by year
2025: 2 · 2024: 2 · 2023: 3 · 2022: 2 · 2021: 6 · 2020: 7 · 2019: 14 · 2018: 7 · 2017: 4 · 2016: 10 · 2015: 7 · 2014: 8 · 2013: 4 · 2012: 5
FWCI
2.86
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Physiology-Endocrinology and Metabolism (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute on Aging (AG 10026)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK071771, R01DK071771)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
Keywords
AS160, protein phosphorylation, skeletal muscle, physical activity, glucose transport, GLUT4 translocation, AMPK, acetyl-CoA carboxylase, glycogen synthase kinase-3, insulin-independent glucose transport, insulin-stimulated glucose transport, epitrochlearis muscle, swimming training
MeSH terms
Acetyl-CoA Carboxylase, Animals, Biological Transport, Glucose, Insulin, Male, Molecular Weight, Multienzyme Complexes, Phosphorylation, Physical Conditioning, Animal, Substrate Specificity, Swimming, Time Factors, Rats, Wistar, Protein Serine-Threonine Kinases, Muscle, Skeletal, 3-O-Methylglucose, Glycogen Synthase Kinase 3, Proto-Oncogene Proteins c-akt, Rats, AMP-Activated Protein Kinases

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review